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    HIGH PRESSURE VARIABLE DISPLACEMENT PISTON PUMP
    7.
    发明公开
    HIGH PRESSURE VARIABLE DISPLACEMENT PISTON PUMP 有权
    高压柱塞泵可变排量

    公开(公告)号：EP2414680A2

    公开(公告)日：2012-02-08

    申请号：EP10704066.9

    申请日：2010-02-09

    申请人： General Electric Company

    发明人： HUTTO, Jr., Walter, Decania

    IPC分类号： F04B49/12 ,  F04B1/29 ,  F04B1/14

    CPC分类号： F04B1/32 ,  F04B1/143 ,  F04B1/29 ,  F04B1/34 ,  F04B49/12

    摘要： A variable flow pump includes: a housing with inlet and outlet chambers interconnected by a main bore and a non-rotating cylinder block positioned in the main bore. The cylinder block includes: a central bore communicating with the inlet chamber; cylinder bores arrayed around the central bore; first feed passages interconnecting the inlet chamber and the cylinder bores, defining a bypass flowpath between the cylinder bores; and at least one discharge valve disposed at the second end which permits fluid flow from the cylinder bores to the discharge chamber but prevents opposite flow; Pistons are disposed in the bores. A shaft is coupled to the pistons so as to cause them to reciprocate through an axial pump stroke when the shaft is rotated. A mechanism is coupled to the cylinder block which modulates the axial position of the cylinder block within the housing, varying the size of the bypass flowpath.